Ubuntu 22.04

Ubuntu 22.04 LTS must require users to reauthenticate for privilege escalation or when changing roles

STIG ID: UBTU-22-432010 | SRG: SRG-OS-000373-GPOS-00156 | Severity: Medium | CCI: CCI-004895,CCI-002038 | Vulnerability ID: V-260558

Description

Without reauthentication, users may access resources or perform tasks for which they do not have authorization. When operating systems provide the capability to escalate a functional capability, it is critical the user reauthenticate.Satisfies: SRG-OS-000373-GPOS-00156, SRG-OS-000373-GPOS-00157

Check

C-64287r953485_chk

Verify the "/etc/sudoers" file has no occurrences of "NOPASSWD" or "!authenticate" by using the following command: $ sudo grep -Ei '(nopasswd|!authenticate)' /etc/sudoers /etc/sudoers.d/* If any occurrences of "NOPASSWD" or "!authenticate" return from the command, this is a finding.

Fix

F-64195r953486_fix

Remove any occurrence of "NOPASSWD" or "!authenticate" found in "/etc/sudoers" file or files in the "/etc/sudoers.d" directory.